[PATCH] D158449: [IR]Add NumSrcElts param to is..Mask static function in ShuffleVectorInst.

[Simon Pilgrim via Phabricator via llvm-commits]

RKSimon added a comment.

No objections to this, but I do think it'd make sense to split into 2 patches - (1) adding the NumSrcElts argument to the shuffle matching helpers + additional unit test coverage and (2) using it in SLP


Repository:
  rG LLVM Github Monorepo

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https://reviews.llvm.org/D158449